Green Semipolar (202̄1̄) InGaN Light-Emitting Diodes with Small Wavelength Shift and Narrow Spectral Linewidth

Autor:	Shinichi Tanaka, Feng Wu, Shuji Nakamura, Kenji Fujito, Yoshinobu Kawaguchi, Steven P. DenBaars, Sang Ho Oh, Yuji Zhao, James S. Speck
Rok vydání:	2013
Předmět:	Materials science Screening effect business.industry General Engineering General Physics and Astronomy law.invention Blueshift Laser linewidth Full width at half maximum Optics law Electric field Optoelectronics business Quantum well Light-emitting diode Diode
Zdroj:	Applied Physics Express. 6:062102
ISSN:	1882-0786 1882-0778
DOI:	10.7567/apex.6.062102
Popis:	We study the optical spectral properties for green semipolar (20) and (201) light-emitting diode (LED) with same indium compositions. Compared to (201) devices, the fabricated (20) micro-LED (?0.005 mm2) showed negligible blue shift and smaller full width at half maximum (FWHM) up to extremely high current densities (10,000 A/cm2). Theoretical simulation indicates that the (20) InGaN quantum well (QW) has reduced polarization-related effects due to combined effects of electric field cancelling and Coulomb screening effect. In addition, the packaged device performance for small-area (?0.144 mm2) semipolar green (20) and (201) LEDs were also discussed. The green (20) LED showed smaller wavelength shift and narrower FWHM than green LEDs fabricated on other planes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8807295dc93cb64b3217d2984b7e02a8 https://doi.org/10.7567/apex.6.062102 Zobrazit plný text záznamu